text: The dimer interfaces of ropB are constructed by a union of the α8 - α12 helices of the N- terminal domain and the C-terminal domain. Additionally, there is an Interface I forged from 3 side chains (C22, Y224, and R226), an Interface II forged from 1 side chain (I255), and N- terminal domains that are all responsible for dimerizing ropB protein subunits together.